<template>
  <div class="login-container">
    <el-row>
      <el-col :xs="24" :sm="24" :md="24" :lg="8" :xl="8">
        <el-form
          ref="loginForm"
          :model="loginForm"
          :rules="loginRules"
          auto-complete="off"
          class="login-form"
          label-position="left"
        >
          <div class="title">
            你好！
          </div>
          <div class="title-tips">欢迎使用数据收集器</div>
          <el-form-item
            style="margin-top: 49px;"
            prop="userName"
            class="login-form-admin"
          >
            <el-input
              v-model="loginForm.username"
              v-focus
              auto-complete="off"
              placeholder="请输入用户名"
              tabindex="1"
              type="text"
            />
          </el-form-item>
          <el-form-item prop="password" class="login-form-pass">
            <div class="svg-container">
              1
            </div>
            <el-input
              :key="passwordType"
              ref="password"
              v-model="loginForm.password"
              :type="passwordType"
              auto-complete="off"
              placeholder="请输入密码"
              tabindex="2"
              show-password
              @keyup.enter.native="handleLogin"
            />
          </el-form-item>
          <el-button
            :loading="loading"
            class="login-btn"
            type="primary"
            @click.native.prevent="handleLogin"
          >登录
          </el-button>
        </el-form>
      </el-col>
    </el-row>
  </div>
</template>

<script>
import { isPassword } from '@/utils/validate'

export default {
  name: 'Login',
  directives: {
    focus: {
      inserted(el) {
        el.querySelector('input').focus()
      }
    }
  },
  data() {
    const validateUserName = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('用户名不能为空'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (!isPassword(value)) {
        callback(new Error('密码不能少于6位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        userName: [
          {
            required: true,
            trigger: 'blur',
            validator: validateUserName
          }
        ],
        password: [
          {
            required: true,
            trigger: 'blur',
            validator: validatePassword
          }
        ]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {},
  mounted() {
    if (process.env.NODE_ENV !== 'production') {
      this.loginForm.username = 'admin'
      this.loginForm.password = '123456'
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true
          this.$store
            .dispatch('user/login', this.loginForm)
            .then(() => {
              const routerPath = this.redirect === '/404' ? '/' : this.redirect
              this.$router.push({ path: routerPath || '/' })
              this.loading = false
            })
            .catch(() => {
              this.loading = false
            })
        } else {
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.login-container {
  background-color: #fafafa;
  background: url("~@/assets/login_images/background.svg") no-repeat fixed right;
  background-size: fill;
  height: 100vh;

  .title {
    height: 50px;
    font-size: 54px;
    font-family: Source Han Sans CN;
    font-weight: 500;
    color: rgba(14, 18, 26, 1);
  }

  .title-tips {
    height: 24px;
    font-size: 26px;
    font-family: Source Han Sans CN;
    font-weight: 400;
    color: rgba(14, 18, 26, 1);
    margin-top: 29px;
  }

  .login-btn {
    height: 60px;
    border-radius: 99px;
    width: 220px;
    display: inherit;
    background: linear-gradient(
      90deg,
      rgba(90, 97, 240, 1),
      rgba(106, 142, 239, 1)
    );
    border: 0;
    box-shadow:  0px 1px 6px 0px rgba(81, 109, 245, 0.2);
    margin-top: 5px;
    font-weight: bold;
    font-size: 24px;
    letter-spacing: 6px;
    &:hover {
      opacity: 0.9;
    }
  }

  .login-form {
    position: relative;
    max-width: 100%;
    background-size: 100% 100%;
    overflow: hidden;
    margin: 22vh 10% 10%;

    .forget-password {
      width: 100%;
      text-align: left;
      margin-top: 40px;

      .forget-pass {
        width: 129px;
        height: 19px;
        font-size: 20px;

        font-family: Microsoft YaHei;
        font-weight: 400;
        color: rgba(92, 102, 240, 1);
      }
    }
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .title-container {
    position: relative;

    .title {
      font-size: 34px;
      color: #546ef5;
      margin: 0 auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .svg-container {
    position: absolute;
    left: 15px;
    top: 14px;
    font-size: 16px;
    color: #d7dee3;
    cursor: pointer;
    user-select: none;
    z-index: 99;
  }

  .show-pwd {
    position: absolute;
    right: 25px;
    top: 14px;
    font-size: 16px;
    color: #606266;
    cursor: pointer;
    user-select: none;
  }

  .login-background {
    min-height: 100vh;
    background: url("~@/assets/login_images/background.svg") no-repeat;
    background-size: contain;
  }
  ::v-deep {
    .el-form-item {
      margin: 20px 0;
      padding-right: 0;
      border: 1px solid transparent;
      background: transparent;
      border-radius: 2px;
      color: #454545;

      &__content {
        line-height: 32px;
        min-height: 32px;
      }

      &__error {
        color: #f00;
        font-size: 12px;
        line-height: 18px;
        position: absolute;
        top: 100%;
        left: 18px;
      }
    }
    .el-input {
      box-sizing: border-box;

      input {
        background: #f6f4fc;
        border: 0;
        border-radius: 99px;
        color: #606266;
        caret-color: #606266;
        padding-left: 45px;
        height: 58px;
        line-height: 58px;
        font-size: 14px;
      }
    }
  }
}
</style>
